(1/2008-1)X(1/2007-1)X(1/2006-1)X……X(1/1998-1)
[x(x+1)+x平方(x-1)]+(-3x)
计算x(x+1)/1+(x+1)(x+2)/1+(X+2)(x+3)/1+……+(x+2006)(x+2007)/1 ,
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
化简:1+x+x(1+x)+x(1+x)^2+……+x(1+x)^2006
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
求1/X(X+3)+1/(X+3)(X+6)+……+1/(X+2007)(X+2010)
计算1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+……+1/(x+2007)(x+200
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
计算 x(x+3)-(x-1)(x-2)
求(x*x)/(x*x+1)的不定积分
已知x³+x+1=0,求值x^2009+x^2008+x^2007+……+x^2+x+1